Large horses require bridles and headstalls that have lots of room for adjustments, including extra lengths of straps and several extra holes for the buckle. Pick out equipment for large horses with advice from a riding instructor in this video on equestrian living.
For those of us who ride horses that might have your larger than average head size there are just a few simple things that we can do to ensure that we're not going to get caught up with something that's not going to work when we get it home. First of all some bridals are made to be different in their size to begin with. You might have what we call the cob size which is designed for small or large ponies, Arabian type horses. Then you have your regular which would be for your quarter horses and maybe some of the other breeds. When we get to the large breeds, our warm-bloods, our bigger draft horses what you want to be sure of is you look at the headstall and determine how much adjustment is there? If I we're picking up a headstall like this one, I would notice that on this side I have very few, in fact I have no holes left that I could put it; put, bring it down to. On this side I have a couple of holes left but I can already determine that a large headed horse would probably not fit this bridal even when brought down to its full size. So then we just have to compare and look at, and ask the advice of those who we're buying from but we want to be that person in charge and knowledgeable enough to notice. This bridal even as it is appears to be a little bit larger, not to mention on both sides we have a number of holes adequate to go way down which should be then large enough to fit any sized horse. I like to find adjustable pieces of equipment that I know when I get to be to the very fullest on both sides would accommodate any size horse. We even have a seventeen hand horse that we do ride in our western worlds. So we know that all of our equipment; you can see right here, this piece would certainly adjust out and be large enough for that horse that we need to accommodate. So it's really about common sense, looking at how many holes do I have left? Is it going to adjust big enough? And then be sure that you haven't just initially purchased that piece of equipment that would ever be called cob size, you want to stay away from any cob size and even in fact hope that they have a designated extra large in the piece of equipment you're looking for.